Abstract

The particles projected by arc plasma are generally of micrometric size (including in general between 10 and 100 μm ) in conventional projection and their impact velocity ranges from 50 to 350 m/s. characteristic times for the formation of a plate are about a microsecond: less than 5 μs for the duration of spreading of the particle melted with a solidification which can start before the end of the spreading stage and continues in general between 0.8 and 10 μm after the impact [1]. It is a question here of numerically studying the complex coupling by using a model which will be first validated in comparison with available results of particles spreading (large size and low impact velocity < 1 m/s).